<p>This little book light clips onto books with ease, but you can also place the light on the table, chair, or other surface, and move the arm into position over your book. The light features three LEDs (with a life-time guarantee); and you can use 3 AAA batteries or the AC adapter to power the unit. You can also collapse the light for extreme portability (carry it anywhere; and it appears to be very durable!) You could even use it as a little desk lamp, which you can take with you to your various study/reading spots. I&#39;ve been very impressed by this light, and I highly recommend it.</p>Zelco produces this Itty Bitty Book Light, which clips to the back of any book and provides &#34;shadow-free light.&#34; You can plug the lamp into a socket with the AC adapter, or use the battery pack, which uses four C batteries. The light is approximately 2&#34; x 5-1/4&#34; x 2-1/2&#34;, and it comes with a battery pack, an adapter, and a spare bulb.The little, blue XtraFlex is a great, lightweight book light. The light runs on 3 AAA batteries (with an AC Adapter available). The flexible neck allows you to position the light into any position; and the Super LEDs provides great coverage to books of any size. You can also position the base as a free-standing light. The XtraFlex is a great, little light for readers.This little unit is a 3-in-one: light, alarm clock and mini-lamp. So, it&#39;s perfect for all your traveling needs. The LED light automatically turns on when you extend it, so you don&#39;t have to fumble with the on/off switch. This little gadget runs on two AA batteries. 5 1/2 High x 1 Wide x 3/4 Deep.This featherweight lamp (weighing 0.2 ounces) has two super-bright LEDs for a powerful and even light source. This light, requiring a six-volt battery, is on an adjustable headband.